Nickolaus is a distinctive boys' name in United States, ranking #6966 in 2015 with 12 recorded births. The name reached its all-time peak in 1998 with 68 births ranking #1569. Since 1996, the popularity has decreased by 76.5%. In 2015, approximately 1 in every 159,688 boys born was named Nickolaus. RISING Recent data shows the name is currently rising.